Support for embedding object in concrete

ABSTRACT

A system for supporting and holding in place an object (for example and not by way of limitation, anchor bolts, steel plates and the like) to be embedded in concrete. A device having a shaft and a tower can be used to support the object, by inserting the shaft into an opening in the tower and rotatably locking the shaft in place at the desired height, an embed can be supported in the desired position. Concrete can be poured around the support to embed the object at the desired position within the concrete.

INCORPORATION BY REFERENCE OF PRIORITY APPLICATIONS

Any and all applications for which a foreign or domestic priority claimis identified in the Application Data Sheet as filed with the presentapplication are hereby incorporated by reference under 37 CFR 1.57. Thisapplication is a continuation-in-part of U.S. application Ser. No.15/181,155 filed Jun. 13, 2016, which claims the benefit of priority ofU.S. Provisional Application No. 62/197,052, filed Jul. 26, 2015, theentire contents of which are herein incorporated by reference.

BACKGROUND

The present invention relates generally to tools used to embed objects,such as steel plates, door closers, electrical boxes, structural embeds,anchor bolts, forms, and the like into concrete slabs.

SUMMARY

Embodiments of the present invention provide a system for supporting andholding in place an object (for example and not by way of limitation,anchor bolts, steel plates and the like) to be embedded in concrete.Embodiments of the present invention significantly reduce the amount oftime and materials required to install embeds by only requiring thecontractor to attach the embed to a device in accordance withembodiments of the present invention, set the device to the desiredheight, install, and pour the concrete. There is no set up or clean uprequired, nor are there wasted materials or labor after the embed hasbeen cast.

In one aspect a support described herein comprises a support devicecomprising: a shaft, the shaft comprising: a rod; a platform attached toa first end of the rod; a first thread disposed along at least a portionof the rod; and a tower having an interior surface, the interior surfacesurrounding an opening in a first end of the tower, the openingconfigured to receive the rod, wherein the interior surface comprises asecond thread formed on at least a portion of the interior surface andadapted to engage the first thread.

In some embodiments, the tower further comprises a securing elementconfigured to releasably secure the rod within the tower.

In some embodiments, the first thread is formed radially around an outersurface of the rod.

In some embodiments, the platform has a pilot hole formed therein.

In some embodiments, the first thread is discontinuous around anexternal surface of the shaft.

In some embodiments, the tower comprises a retention element disposed onan exterior of the tower.

In some embodiments, the first thread is configured to rotatably engagethe second thread.

In some embodiments, the shaft further comprises a plurality ofmeasurement indicators thereon, the measurement indicators indicatingthe distance from a second end of the tower to a top surface of theplatform.

In some embodiments, the tower further comprises a base connected to asecond end of the tower, the base comprising a plurality of legsextending radially from a central axis of the tower, the legs beingformed having throughholes therein.

In some embodiments, the support further comprises an attachment plate,the attachment plate configured to attach to the base of tower, theattachment plate comprising attachment holes.

In some embodiments, the attachment holes are larger than thethroughholes in the legs of the base.

In another aspect described herein, a method of supporting an objectcomprises placing a support device within a form, the support devicecomprising a shaft, the shaft comprising: a rod; a platform attached toa first end of the rod; a first thread disposed along at least a portionof the rod; a tower having an interior surface, the interior surfacesurrounding an opening in a first end of the tower, the openingconfigured to receive the rod, wherein the interior surface comprises asecond thread formed on at least a portion of the interior surface andadapted to engage the first thread; inserting the shaft into the openingin the first end of the tower; and rotating the shaft to engage thefirst thread with the second thread.

In some embodiments, the method further comprises adjusting the supportdevice to a desired height using a plurality of measurement indicatorslocated on the shaft, the measurement indicators indicating the distancefrom a second end of the tower to a top surface of the platform.

in some embodiments, the method further comprises attaching an object tothe platform.

in some embodiments, the method further comprise pouring concrete intothe form around the support device, thereby embedding the object in theconcrete at the predetermined height.

In some embodiments, the method further comprises retaining the tower inthe concrete using a retention element, the retention element disposedon an exterior of the tower.

In some embodiments, the tower further comprises a base connected to asecond end of the tower, the base comprising a plurality of legsextending radially from a central axis of the tower, the legs beingformed having throughholes therein.

In some embodiments, the method further comprises attaching the base toan attachment plate, the attachment plate comprising attachment holesthat are larger than the throughholes, the attachment plate configuredto be attached to a substrate by inserting an attachment mechanismthrough the attachment holes and into the substrate.

In another aspect described herein, a support device comprises a shaft,the shaft comprising a rod having a first diameter; a platform attachedto a first end of the rod, the platform having a pilot hole formedtherein; at least one locking groove disposed along at least a portionof the rod, wherein the at least one locking groove has a seconddiameter, which is larger than the first diameter; and a towercomprising: a tower portion having a first end and a second end, thetower portion having an interior surface forming an opening in the firstend, the opening configured to receive the shaft, wherein the interiorsurface comprises at least one locking member disposed on the interiorsurface, the at least one locking member configured to engage the atleast one locking groove, respectively; a base connected to the secondend of the tower portion, the base comprising a plurality of legsextending radially from a center of the tower portion; and a pluralityof feet disposed on the plurality of legs.

In some embodiments, the at least one locking groove is configured torotatably receive the at least one locking member, respectively, toreleasably lock the shaft in position within the opening.

BRIEF DESCRIPTION OF THE DRAWINGS

The novel features of the invention are set forth with particularity inthe claims that follow. A better understanding of the features andadvantages of the present invention will be obtained by reference to thefollowing detailed description that sets forth illustrative embodiments,in which the principles of the invention are utilized, and theaccompanying drawings of which:

FIG. 1A depicts a cross section of a dissembled embodiment of a support.

FIG. 1B depicts a cross section of the support shaft of FIG. 1A takenalong line 1B-1B′.

FIG. 1C depicts a cross section of rod of FIG. 1A taken along line1C-1C′.

FIG. 1D depicts a cross section of the tower body of FIG. 1A taken alongline 1D-1D′

FIG. 2 depicts a cross section of an assembled embodiment of the rod andtower of FIG. 1

FIG. 3A is a perspective view of an embodiment of a support.

FIG. 3B is a top view of the tower portion of FIG. 3A.

FIG. 4A is a perspective view of an embodiment of a shaft portion of asupport.

FIG. 4B is a front view of the shaft portion of FIG. 4A

FIG. 5 is a perspective view of a support having a shaft portioninserted into the tower portion.

FIG. 6 is a photograph of a support within a concrete form supporting anembed.

FIG. 7A is a perspective view of an embodiment of an attachment plateconfigured to attach to a support.

FIG. 7B depicts a perspective view of the attachment plate of FIG. 7Aattached to a support.

FIG. 8A depicts a perspective view of an embodiment of a support havinga shaft portion threaded into a tower portion.

FIG. 8B depicts a perspective view of a threaded shaft with measurementindicators.

FIG. 8C depicts a cross section of an embodiment of a support having apartially threaded rod threaded into a tower.

FIG. 9A depicts a partial cross section of a support having a notchedrod portion inserted into a tower portion.

FIG. 9B depicts a top view of a clamp surrounding the tower portion ofFIG. 9A.

FIG. 9C depicts a bottom view of an embodiment of a rod portion.

FIG. 10 depicts a perspective view of a support having a smooth shaftportion clamped into a tower portion.

FIG. 11A depicts a partial cut-away view of a support having a rack andpinion design.

FIG. 11B depicts a perspective view of a circular gear and handle usedin the embodiment of FIG. 11A.

FIG. 12 depicts a perspective view of a dissembled embodiment of asupport.

FIG. 13 depicts a perspective view of a dissembled embodiment of asupport.

FIG. 14 depicts a cross section of an embodiment of a support.

DETAILED DESCRIPTION

In most construction projects, the design calls for certain structures,elements, or other objects to be embedded in concrete. These objects aregenerally placed within the concrete forms, and then concrete is pouredinto the forms, thus embedding the object in the poured concrete. Oneexample of these “embeds” is a steel plate with steel anchors, which iscast into the slab in order to facilitate the future connection of asteel member, such as a column or support, to the concrete slab. Thefirst step of the current method used to set these embeds involvesattaching the steel plate to be embedded to a wood support (usually 2×4sor plywood) built specifically for each embed. If the embed is locatednear the slab edge, the wood support with the embed attached is nailedto the edge form. If the embed is located away from the slab edge,L-angles (typically shelf brackets used to support shelves) areinstalled on the deck formwork (or supported in the ground in the caseof a slab on grade) in order to secure the wood support with the embedattached thereto. The wood support is then screwed to the L-angles. Theconcrete is poured and cured. The L-angles are taller than the slabdepth making it necessary to grind off excess material of the L-angleremaining above the slab after the pour. Current methods for embeddingthese objects into concrete are very time consuming, as each embedrequires the contractor to set up equipment (such as saws, power cords,etc.), procure materials (such as plywood, 2×4s, and the like), cut andassemble a custom support for each embed, and then remove any excessportions of the support after pouring the concrete. For example, whenL-angles are used, the contractor is required to grind down the L-anglethat is left exposed above the slab.

The present disclosure describes a system for supporting and holding inplace an object (for example and not by way of limitation, anchor bolts,steel plates and the like) to be embedded in concrete. Embodiments ofthe present invention significantly reduce the amount of time andmaterials required to install embeds by only requiring the contractor toattach the embed to a device in accordance with embodiments of thepresent invention, set the device to the desired height, install, andpour the concrete. There is no set up or clean up required, nor arethere wasted materials or labor after the embed has been cast.

Referring to FIG. 1A, device 100, in accordance with an embodiment ofthe present invention, comprises support shaft 102 and tower 104, wheresupport shaft 102 is adapted to mate with tower 104, and when adjustedto the desired height tower 104 and shaft 102 are locked together(locking may be permanent or nonpermanent, the latter provided toreadjust the height). The skilled artisan will appreciate that device100 may be provided as a single unit, and the two separated pieces areexemplary.

Support shaft 102, in accordance with one embodiment, has platform 106on which the object (not shown) to be embedded rests. Platform 106 isconnected or integrally formed with rod 108, and rod 108 has lockingteeth 112A that mate and lock with teeth 112B on tower 104 (describedmore fully below). Preferably teeth 112A are ridges embedded into thematerial of rod 108 (FIG. 1C), where the ridges are downwardly directed(not shown) in order to mate and lock with teeth 112B as describedherein. In some embodiments, pilot hole 110 is formed in or throughplatform 106. In some embodiments, the pilot hole 110 extends throughthe shaft 108. The pilot hole 110 is used to aid in mounting the object(not shown) on platform 106, for example, by using a screw, rod, rivet,or other attachment device.

Referring to FIGS. 1B-1C, cross sections of support shaft 102 areprovided. Platform 106 has a hexagonal shape, but the present disclosureis not limited thereto. Rod 108, in this embodiment, has a circularcross-section. However, the skilled artisan will recognize that othercross-sectional shapes will fall within the inventive concepts. Forexample and not by way of limitation oval, hexagonal and other shapeswill work, but circular is preferred for ease of manufacture. Groove114A extends vertically along rod 108 and in proximity to locking teeth112A. Groove 114A slides over teeth 112B to permit rod 108 slide intoand out of tower 104.

Referring again to FIG. 1A tower 104 has main body 116, base 118 andfeet 120. Feet 120 are optionally present to minimize surface areacontact of base 118 with the concrete forms (not shown). Holes (notshown) can also be provided in feet 120 or base 118 to secure device 100to the forms. The skilled artisan will appreciate base 118 may have anyappropriate or desired shape to achieve the purpose of supporting device100 under the required loads to support the object. In some embodiments,base 118 has a tripod configuration where the three legs extend frombody 116 at right angles (making them sit flat against a surface),although other angles may be chosen, and this preferred embodiment hasthree feet on the bottom of each leg. In an embodiment where the threelegs extend from body 116 at angles greater than 90 degrees, it feet 120may not be present. Filets 122 may optionally be included to enhance thestructural strength of tower 104.

Referring to FIG. 1D, the cross-section of tower body 116 has a shapematching that of rod 108 to receive rod 108 therein. In someembodiments, a groove may extend vertically along the inside of towerbody 116 mirroring groove 114A, and would receive teeth 112A of shaft108, if teeth 112A extended externally from the surface of shaft 108,rather than as shown in FIG. 1C.

In use, the object is rested or secured to platform 106. Rod 108 slidesinto and down main body 116 of tower 104, where teeth 112B slide alongrespective grooves 114A until platform 106 and the object are at thedesired height, then rod 108 and body 116 are rotated relative to eachother interlocking teeth 112A and 112B, thereby locking rod 108 and body116 so they may not slide up and down relative to each other. In analternative embodiment a ridge (not shown) may be provided at the baseof the teeth 112A such that as teeth 112B are rotated over the ridgesthe device clicks into a locked or semi-locked position. If the holes(not shown) are provided in feet 120, they may be secured to theconcrete forms (not shown), if not previously secured. The skilledartisan will appreciate that these steps may take place in any order asdesired. Further the skilled artisan will recognize the teeth 112A and112B may be replaced by any suitable mechanism to lock or fix rod 108relative to body 116. For example and not by way of limitation, insteadof teeth extending around only a portion of rod 108 and body 116,threads may extend all the way around and be pitched to mate with eachother in a manner well known, obviously in this embodiment the groovesare not necessary. Rod 108 and body 116 would slide vertically relativeto each other in this alternative embodiment by rotating either or bothsuch that the threads moved one relative to the other until the desiredheight is attained.

In some embodiments, device 100 may be made from injection moldedplastic with suitable structural characteristics in combination with thedesign of device 100 to structurally support the object. The skilledartisan will recognize many other materials from which device 100 may bemanufactured, including without limitation cast aluminum. Preferablyeither or both rod 108 and body 116 are marked with measurements toallow the user to determine height without the need to use a measuringtape.

Referring to FIG. 2, the assembled support is shown, with the rod 108disposed within the tower body 116.

Referring to FIG. 3A, a support 300 comprises a tower 304 and a shaft302. The shaft 302 is configured to be inserted into the tower 304, andto adjustably slide up and down within the tower 304, as will bedescribed in greater detail below. The tower 304 comprises a tower body316 and a base 318, which is attached to a first end 332 of the towerbody 316. The tower body 316 and the base 318 can be integrally formedas a single piece, or can be separately formed and attached together bygluing, ultrasonic welding, and the like. The tower body 316 extendsperpendicular to a plane of a bottom 336 of the base 318 such that thewhen the base 318 is placed on a surface, the tower body 316 extendsperpendicular to the surface on which the base 318 is placed. in someembodiments, the tower body 316 can be connected to the base 318 at anydesired angle, such that when the base 318 is attached or placed on asurface, the tower body 316 can extend at an angle of 30°, 45°, 60°,relative to the surface on which the base 318 is attached. In suchembodiments, the platform of the shaft 302 can be similarly angled suchthat a surface of the platform extends perpendicular to the surface onwhich the base is attached.

The tower body 316 is forms an opening 330 disposed axially along aportion of the length of the tower body 316. The opening 330 isconfigured to receive an end of the shaft 302. In some embodiments, theopening 330 extends along the entire length of the tower body 316 andthrough the base 318. In some embodiments, the opening 330 extends alongonly a portion of the tower body 316.

In some embodiments, the tower body 316 can have a tapering innerdiameter. As shown in FIG. 3A, the inner diameter of the first end 332of the tower body 316 is larger than the inner diameter of a second end334 of the tower body 316. The inner diameter of the tower body 316 getssmaller as the tower body 316 extends away from the base 318 and firstend 332 of the tower body 316 toward the second end 334 of the towerbody 316. The taper of the tower body 316 can provide extra strength forthe tower 304 to support an embed, or an object to be embedded in theconcrete.

In some embodiments, the tower body 316 may comprise a retention element352. As shown in FIG. 3A, the retention element 352 may extend radiallyfrom an exterior of the tower body 316. In some embodiments, theretention element 352 circumferentially surrounds the tower body 316. Insome embodiments, the retention element 352 comprises one or moreprotrusions extending from the exterior of the tower body. In someembodiments, the retention element 352 is integrally formed or molded aspart of the tower body 316. In some embodiments, the retention element352 is formed or molded individually and later fitted or attached to thetower body 316. The retention element 352 may be configured to retainthe tower body 316 in the concrete after the surface is removed.

One or more locking members 340 can be formed within the opening 330 atthe second end 334 of the tower body 316. In some embodiments, twolocking members 340 are formed within the opening 330 on opposing sidesof the opening 330. In some embodiments, the locking members 340 can beformed within the opening 330, on the inner surface of the tower body316, at any position along the length of the tower body 316. Thedistance between the locking members 340 can correspond to the diameterof the shaft 302, which will be described in greater detail below. Thelocking members 340 interact with corresponding features on the shaft302 which will be described in greater detail below.

In some embodiments, two locking members 340 can be disposed on opposingsurfaces on the inner surface of the tower body 316, in the same plane.In some embodiments, one or more additional locking members 340 a can bedisposed farther down within the opening 330, on the inner surface ofthe tower body 316, formed in a plane parallel to the plane of the otherlocking members 340, spaced apart at a distance equivalent to thesurfaces of corresponding locking channels formed on the rod portion308, which will be described in greater detail below. In this way, theshaft 300 can support more weight, or support a heavier embed, as thetwo levels of locking tabs 340 can provide additional surfaces on whichthe weight of the embed can be distributed.

The base 318 comprises one or more legs 324. As depicted, the base 318includes 3 legs 324, disposed equidistant from each other around thebase 318, and extending radially from the center of the base 318 and thecenter of the tower body 316. Each of legs 324 can include a foot 320attached thereto. The feet 320 can taper such that the diameter of thefoot 320 is larger near the base 318, and narrows as the foot 320extends away from the base 318. In this way, the foot 320 minimizes thefootprint of the support as it is cast into the concrete, such that thesupport is nearly invisible when viewed from below, where, for example,the concrete slab is an overhead slab, or is accessible from below.

The legs 318 may include throughholes 326. Throughholes 326 can extendthrough the feet 320, such that an anchoring device can be driventhrough the legs 324 and the feet 320, to anchor the base 318 to asurface. For example, the base 318 can be placed on a surface within aconcrete form to support an embed within a concrete slab to be poured.In order to ensure accurate placement of the embed, the support 300should stay firmly in place when attaching the embed to the support 300(which will be described in detail below), and when pouring theconcrete. To ensure the base 318, and thus the support 300, stays in thedesired position, an anchor can be inserted into each of thethroughholes 326, through the feet 320, and into the surface on whichthe base 318 is placed. in some embodiments, the anchor can be a nail,screw, rivet, bar, rod, bolt, or any other desired attachment anchor.The head of the anchoring device, such as the head of the nail, can belarger in diameter than the diameter of the throughhole 326 (or thelargest dimension of the throughhole 326 if the throughhole 326 is notcircular), so that the shaft of the nail goes through the throughhole326 and into the surface on which the base rests, while the head of thenail impinges the base 318. This will hold the base 318 firmly in placeduring use.

In some embodiments, one or more of the throughholes 326 can extendthrough the base 318 and the foot 320 at an angle other thanperpendicular to the plane of the bottom 336 of the base 318. Forexample, the throughhole 326 located in the leg 324 a which is longerthan legs 324 b and 324 c can have an inner surface which is notperpendicular to the surface on which the base 318 can be placed, orwhich is not parallel to the direction in which the tower body 316extends. Having an angled throughhole 326 in one or more of the legs 324a-c may allow for greater flexibility to use the support 300 in areas orplaces that are more difficult to access. For example, where a nail isused for attaching the base 318 to a surface, and an object to beembedded is attached to the shaft 302, the distance between the surface,and an underside of the object to be embedded is a fixed distance, whichmay not be sufficient to allow a user to swing a hammer sufficiently todrive the nail into the surface. By having an angled throughhole 326,the distance for swinging a hammer can be increased. If the angle of thethroughhole 326 is great enough, the object to be embedded may not be inthe swinging path of the hammer.

In some embodiments, the throughhole 326 can have a varying diameteralong the length of the throughhole 326. For example, as seen in FIG.3B, the throughhole 326 can have an inner portion 327 which extendsperpendicular to the plane of the bottom 336 of the base 318, and anouter portion 328, which extends at an angle other than perpendicular tothe plane of the bottom 336 of the base 318. Thus, a nail, or otheranchor device, can be driven in at an angle other than perpendicular tothe surface on which the base 318 is placed.

In some embodiments, the legs 324 may be of different lengths. Forexample, as depicted, a first leg 324 a is longer than the other legs324 b and 324 c. The different lengths of the legs 324 can ensure that auser has options for securing the post. For example, the geometry ordimensions of an object to be supported extend in such a way as tointerfere with the throughholes 326, or which do not allow sufficientroom for a nail or other anchor device to be driven through thethroughhole 326. By extending the first leg 324 a a distance fartherfrom the central axis of the tower 304, the throughhole 326 is movedfarther from the central axis of the tower 304, and farther from apotentially interfering object to be supported. Thus, by extending oneleg, a user may have sufficient room to swing a hammer in order to drivea nail through the throughhole 326 in the first leg 324 a, whereas theremay not be sufficient room to drive a nail through the throughholes 326in the other legs 324 b and 324 c. The length of the first leg 324 a canalso provide greater flexibility in nailing, since it offers a differentnailing point than the other legs 324 b and 324 c. For example, thelonger first leg 324 a may be over a different type of subgrade ornailing surface than the other legs 324 b and 324 c.

In some embodiments, the base 318 includes a supporting filet 322, whichsurrounds the tower body 316, and which provides structural support forthe tower body 316. In some embodiments, the supporting filet 322 may beomitted, or may be of another design. A person of skill in the art,guided by this disclosure, would understand that structural support forthe tower body 316 can be provided in various ways in addition to thesupporting filet 322.

FIG. 3B depicts a top view of the tower 304. The locking mechanisms 340can be seen on opposing sides of the opening 330. The locking mechanisms340 each comprise a first end 342, a second end 344, an inner surface346, a top surface 347, and a notch 348, which is formed as an indent ordepression in the inner surface 346. The notch 348 is formed in theinner surface 346 in a direction extending from the center of theopening 330 radially outward toward the tower body 316. The innersurface 346 is curved, and follows the contour of an inner surface 331of the opening 330. The inner surface 346 curve also corresponds to theouter surface of the shaft 302, which will be described below.

FIG. 4A depicts an embodiment of the shaft 302, sized and shaped to fitinto the opening 330 of the tower 304. The shaft 302 comprises aplatform 306 and a rod portion 308. The platform 306 is located at afirst end 307 of the shaft 302, and comprises a planar surface disposedperpendicular to an axis A of the rod portion 308. The platform 306 canbe circular, rectangular, square, or any other shape, as desired. Theplatform 306 is formed with a pilot hole 310 therein. The pilot hole 310can be a hole, an indentation, a throughhole, and the like. The pilothole 310 is formed in the center of the platform 306 and can be axiallyaligned with the axis A of the rod portion 308 of the shaft 302. In someembodiments, the pilot hole 310 can extend the length of the shaft 302,from the first end 307 in the platform 306, through to a second end 309.

The pilot hole 310 is configured to receive an attachment device (notshown), such as a screw, a nail, a bolt, and the like. In someembodiments, the pilot hole 310 may have an internal thread formedtherein to mate with threads on a screw or bolt inserted into the pilothole 310. In this way, an attachment device can be releasably retainedwithin the pilot hole 310, and an embed can be securely attached to theshaft 302, as will be described elsewhere herein. In some embodiments,the pilot hole 310 may not have a threaded pilot hole 310.

As shown in FIGS. 4A and 4B, the rod portion 308 comprises two setslocking threads 360 formed on opposite sides of the rod portion 308. Thelocking threads 360 are formed radially around the outer surface of therod portion 308. In some embodiments, each of the sets of lockingthreads 360 together extend around about one-half of the circumferenceof the rod portion 308. In some embodiments, the locking grooves extendaround less or more than one-half of the circumference of the rodportion 308. The locking threads 360 can be formed in parallel planesalong a length of the rod portion 308. The sets of locking threads 360comprise a plurality of locking channels 362. The plurality of lockingchannels 362 each comprise a channel opening 363, an upper surface 364,a lower surface 365, a stop 366, and a locking ridge 368. The lockingchannel 362 has a height h, which is sized to accept one of the lockingmembers 340 formed in the opening 330 on the tower 304. The uppersurface 364 is a planar surface extending radially around the rodportion 308, parallel to the platform 306, and perpendicular to the axisA of the rod portion 308. The upper surfaces 364 of each of the lockingthreads 360 can be formed in parallel planes.

The lower surface 365 can be a planar surface, or can be a taperedsurface of increasing diameter, increasing along a direction from thefirst end 307 to the second end 309 of the shaft 302. The stop 366 is aplanar surface formed perpendicular to the top surface 364 and the lowersurface 365, and protrudes from the rod portion 308 radially outward,perpendicular to the axis A. The stop 366 is formed at and end of thelocking channel 362 opposite the opening 363.

The locking ridge 368 is a ridge, bump, protrusion, tab, or othersimilar feature that extends radially outward from the rod portion 308,and extends from the lower surface 365 to the upper surface 364. Thelocking ridge 368 is disposed proximate the stop 366, away from thechannel opening 363. The locking ridge 368 is sized and shaped to matewith the notch 348 formed in the locking tab 340, as will be describedin greater detail below.

The rod portion 308 also comprises measurement indicators 315. Themeasurement indicators 315 comprise markings, numerals and units, suchas inches, centimeters, and the like. The markings are aligned withupper surfaces 364 and correspond to specific measurements, whose usewill be described in greater detail below. The measurements indicators315 can be in increments of 1 mm, 10 mm, 1 cm, 2 cm, 1/16″, ⅛″, ¼″, ½″,or any other unit of length. When the shaft 302 is inserted into theopening 330 of the tower 304 and locked in place (as will be describedbelow), one of the markings of the measurement indicators 315 will alignwith the second end 334 of the tower body 316. The measurement indicator315, that is, the marking and the corresponding numeral and unit (e.g.,1¼ inch) aligned with the top of the tower 304, correspond to the heightof the platform 306 from the surface on which the tower 304 is located.For example, when the shaft 302 is installed in the tower 304, themeasurement indicator 315 aligned with the second end 334 of the towerbody 316 corresponds to the distance from the bottom of the feet 320 andthe planar surface of the platform 306. In some embodiments, themeasurement indicators will indicate the entire distance, such as 7inches, 8½ inches, or any other desired measurement. In someembodiments, the measurement indicators 315 will correspond to thedistance between the top of the tower 304, or the second end 336 of thetower portion 316, and the surface of the platform 306. In this case,the tower portion 316 can have a height indicator thereon. For example,the tower platform may have a 5 inch, 6 inch, 7 inch, etc. markingthereon to indicate how tall the tower 304 is, or the distance betweenthe feet 320 and the second end 334 of the tower body 316. Then, todetermine the distance between the surface on which the tower 304 isplaced and the platform 306, a user can add the distance measurement onthe tower body 316, e.g., 7 inches, to the measurement indicator 315 onthe shaft 302, e.g., 1½ inches, to get an overall height of 8½ inches.Thus, a user can determine how far the platform is off the surface onwhich the tower 304 is placed. In some embodiments, the shaft 302 maynot have a measurement indicator 315 thereon. The user may use ameasuring device, such as a ruler or tape measure, to measure and/or setthe height of the platform 306 above the surface on which the tower 304is placed.

FIG. 5 depicts the support 300 in an assembled state, with the rodportion 308 inserted into the tower body 316 to the desired height andreleasably retained within the tower body 316 by the interaction betweenthe locking tab 342 and the locking threads 360.

Operation of the support 300 will now be described. As an example, thesupport 300 can be used in an application that requires suspending anelectrical box (not shown), such as for a floor outlet, in a concreteslab. In this example, the slab is to be 11½ inches thick, theelectrical box is to 3 inches thick, and a support 300 having a 7 inchtower is used. A concrete form is prepared, or has previously beenprepared. In this example, the concrete slab is assumed to be on grade,or on a prepared substrate. The tower 304 is placed in the form on thegrade or prepared substrate. The tower 304 is positioned within the format the desired location of the electrical box. The tower 304 is attachedto the grade or the substrate using nails or screws, or other desiredfasteners.

Once the tower 304 is positioned, the shaft 302 is inserted into theopening 330 in the tower body 316. To insert the shaft 302, the shaft302 must be inserted such that the locking threads 360 are not alignedwith the locking tabs 340. That is, the shaft 302 is inserted so thatthe portion of the rod portion 308 which is does not include the lockingthreads 360 is axially or vertically aligned with the locking tabs 340.The diameter or cross-sectional area of the rod portion 308 is smallerthan the diameter of the opening 330, so the rod portion 308 will beeasily received into the opening. The rod portion 308 is inserted untilthe measurement indicator 315 corresponding to 1½ inches is aligned withthe second end 334 of the tower body 316. By setting the rod portion 308at the 1½ inch measurement indicator 315, the platform 306 is positioned1½ inches above the top of the tower body 304, which is 7 inches tall,for a total height from the grade or substrate of 8½ inches.

When the shaft 302 is at the desired position, the shaft 302 is rotatedabout axis A. As the shaft 302 rotates, the first end 342 of the lockingtab 340 is received into the channel opening 363. The first end 342 ofthe locking tab 340 may impinge the tapering lower surface 365, and, asthe shaft 302 is further rotates, the first end 342 can travel along thelower surface 365. The top surface 347 may impinge the upper surface 364of the locking channel 362 into which the locking tab 340 has beenreceived. The inner surface 346 of the locking tab 340 also slides alongan outer surface of the rod portion 308 as the shaft 302 is rotated.

As the shaft 302 is rotated further, the first end 342 impinges on theridge 368 and slides over the ridge 368. As the shaft 302 is rotatedeven further, the ridge 368 will align with the notch 348, and the ridge368 will be received into the notch 348. The notch 348 is spaced fromthe first end 342 of the locking tab 340 such that when the notch 348receives the ridge 368, the first end 342 will impinge on the stop 366.The stop 366 will prevent further rotation of the shaft 302. The fitbetween the notch 348 and the ridge 368 will provide a locking function,preventing the shaft 302 from being accidentally or inadvertentlyrotated. However, the shaft 302 can still be rotated to release thelocking tab 340 from the locking channel 362 by the application ofsufficient force. This process has been described for one locking tab340 interacting with one locking thread 360, however, a person of skillin the art will understand that where two sets of locking threads 360and two locking tabs are provided, the same procedure described abovewill occur at the same time for both locking tabs 340 and for twolocking threads 360.

In some embodiments, the rod portion may comprise 1 or more sets oflocking threads 360. In some embodiments, the rod portion may comprise2, 3, 4, 5, 10, 20, or more sets of locking threads 360, as desired toestablish or set a desired height increment by which the shaft 302 canbe adjusted. If a smaller increment is desired, more locking threads360, space closer together, can be used. In some embodiments, the towerbody 316 may comprise 1, 2, 3, 4 or more locking tabs 340. In this case,the process described above would occur at the same time for the numberof locking tabs 340 interacting with a corresponding number of lockingthreads 360.

In some embodiments, the shaft 302 can be rotated into the desiredposition, and the platform set to the desired height prior to attachingthe tower 304 to the grade or prepared substrate.

After the shaft 302 has been locked into the desired position (as shownin FIG. 5), the 3 inch thick electrical box can be connected to theplatform 306 using the pilot hole 310. The electrical box may have amounting hole or a screw hole formed therein. The mounting hole (notshown) in the electrical box (not shown) is positioned over the pilothole 310 in the shaft 302, and a screw, nail, or other attachmentmechanism is inserted into the mounting hole and the pilot hole 310 toattach the electrical box to the platform 306. By setting the totalheight of the support from the grade or substrate to 8½ inches, the 3inch electrical box will be flush with the 11½ inch concrete slab.

When the support 300 has be positioned within the frame, set to thedesired height, as indicated on the measurement indicators 315, and theelectrical box is attached via the pilot hole 310, the concrete can bepoured into the frame. The concrete will flow around the support 300 andthe portion of the electrical box to be embedded in the concrete. Thesupport 300 will hold the electrical box in position as the concrete ispoured. After the concrete is finished, such as troweled, floated, etc.to the desired thickness and the concrete has cured, the screw orattachment mechanism can be removed from the mounting hole of theelectrical box and the pilot hole 310 of the support 300, resulting inthe electrical box being positioned within the slab at the desiredposition.

The order in which the components of the support 300 are used can varywithout departing from the scope of the present disclosure. For example,a user may set the shaft 302 to the desired height, attach the object tothe platform 306 using the pilot hole 310, then attach the tower 304 tothe grade or prepared substrate.

FIG. 6 depicts a perspective view of multiple supports 300 being used inan application to support an embed 680 in a form 690, prior to concretebeing poured. The embed 680 is a steel plate and includes a top surface682, in which holes (not shown) are formed, and posts 684 which extenddownward from the top surface 682. The supports 300 are attached to abottom surface 692 of the form 690. The supports are securely held inplace by nails 629 which are inserted into throughholes 326 of the base318, and secured into the bottom surface.

The embed 680 is attached to the supports 300 via screws 611. The screws611 pass through holes (not shown) in the top surface 692 of the embed680, and into the pilot holes 310 formed in supports 300. The shafts 302of the supports 300 have been set at the proper height and locked intoplace within the tower portions 316 as described elsewhere herein. Theshafts have been set at the proper height such that the top surface 692of the embed 680 is aligned with a top plane of a vertical portion 694of the form 690, so that the top surface 692 will be flush with thefinished surface of the concrete.

After the supports are secured to the form 690 and the embed 680 issecured to the supports, which are set at the desired height, theconcrete (not shown) can be poured into the form. As the concrete ispoured, the supports 300 will stay secured in place, and the concretewill flow around the supports 300 and the posts 684. The posts 684 willbecome securely fixed within the concrete. After the concrete has set,the embed 680 will be at the desired elevation within the concrete. Thescrews 611 can be removed from the holes in the top surface 682 and thepilot holes 310 in the supports 300. In this way, there is no need tobuild a rig or use other constructions to hold the embed 680 in placefor concrete pouring. After the screws 611 are removed, there is no partof the support 300 protruding above the surface of the concrete. Nothingneeds to be cut off, ground down, or removed, resulting in an efficientand effective way to position embed 680 within concrete.

Although embed 680, a steel plate, is shown herein, other embeds, suchas electrical boxes, conduits, forms, and other objects can be embeddedin concrete using the supports 300 described herein, without departingfrom the scope of the specification.

FIG. 7A depicts an attachment plate 700 configured for use with thesupport 300 described herein. FIG. 7B depicts the support 300 attachedto the attachment plate 700. The attachment plate 700 comprises a planarsurface 710, guide surfaces 724, locking members 725, receiving holes726, and attachment holes 730. The guide surfaces 724 are formed on theplanar surface 710 and extend perpendicular upward from the planarsurface 710. The guide surfaces have the same contour as, correspond to,or are configured to receive or mate with surfaces on the underside ofthe base 318. The locking members 725 are positioned on the planarsurface at positions that correspond with the ends of the legs 324 a-324c of the support 300. The locking members 725 are positioned to providea snap fit or friction fit of the ends of the legs 324 a-c when thesupport is placed onto the attachment plate 700. The receiving holes 726correspond to the throughholes 326 and the feet 320 of the support 320.The receiving holes are formed in the planar surface 710, and, as shown,have a tapering inner diameter 724 as the receiving hole 726 extendsthrough the planar surface. The tapering inner diameter is configured tocorrespond to a dimension of the feet 320 of the support 300. In thisway, the receiving hole 726 receives the feet 320 of the support 300such that the underside of the base 318 can contact or mate with theguide surfaces 742. The attachment holes 730 are formed as throughholesin the attachment plate 700. The attachment holes 730 can be distributedevenly around the attachment plate 700, and can be offset from thereceiving holes 726. In some embodiments, there can be 1, 2, 3, or moreattachment holes. The attachment holes 730 can have a larger diameterthan the throughholes 326 in the support 300. In this way, theattachment holes 730 can receive a larger anchoring device, such as alarger nail, bolt, etc.

The attachment plate 700 can be used in an application where a concreteform is formed on a loose surface, such as gravel, dirt, and the like.Mounting the support 300 on such a loose surface may be difficult usingonly anchors inserted through the throughholes 326 in the base 318, asthe smaller diameter anchors, such as nails, may not provide adequatesupport in a loose surface. The larger attachment holes 730 can allowfor a larger diameter anchor, such as a nail or the like, to be insertedthrough the attachment holes 730 and into the loose surface to ensurethe attachment plate 700 and the support 300 stay in place duringconcrete pouring. To use the attachment plate 700, the base 318 isinserted into the corresponding portions of the attachment plate 700.That is, the feet 320 are inserted into the receiving holes 726, and theends of the legs 324 a-c form a snap or friction fit with the lockingmembers 725. The guide surfaces contact the underside of the base 318.In this way, the support 300 is securely, releasably attached to theattachment surface 700. The attachment surface 700 can be then anchoredto the loose surface using appropriate anchors, which will keep thesupport 300 in place as concrete is poured into the frame. The objectconnected to the platform 306 will then be positioned within theconcrete as desired. Of course, the steps of attaching the object to theplatform 306, attaching the support to the attachment plate 700, andanchoring the attachment plate to the loose surface can be performed inany order, as desired.

The attachment plate shown and described is exemplary. A person of skillin the art, guided by this disclosure, would understand that theattachment plate 700 can vary based on the dimensions, shape, size, etc.of the support 300 to which the attachment plate 700 is configured toattach.

Referring to FIG. 8A, a support 800 comprises a shaft 802 and a tower804. The shaft 802 comprises a platform 806 and a rod portion 808. Therod portion 808 comprises threads 870 that surround an outer surface ofthe rod portion 808. The tower 804 comprises a tower body 816 and a base818, which is attached to a first end 832 of the tower body 816. Thetower body 816 and base 818 can be substantially similar to thosedescribed above with reference to FIG. 3A. The shaft 802 is configuredto be threaded into a second end 834 of the tower body 816 and beadjustably retained within the tower body 816 by an interaction betweenthe threads 870 on the rod portion 808 and corresponding threads (notshown) on the inner surface of the tower body 816. In one embodiment,the rod portion 808 is color coded with colored markers 814corresponding to predetermined measurements. For example, in someembodiments, for every ¼ inch there is a thin strip of yellow around thecircumference of the rod portion 808. In some embodiments, a color maybe assigned for each measurement value. For instance, red signifies a 1inch marker, blue signifies a ¾ inch marker, green signifies a ½ inchmarker, and yellow signifies a ¼ inch marker. In one embodiment, a keyor guide (not shown) for the color coding scheme may be printed onto theexterior of the tower body 816 for reference by an operator. The skilledartisan will appreciate that alternative color coding schemes could beimplemented. In this manner, the height of the platform 806 isdetermined by aligning a colored marker 814 with the second end 834 ofthe tower body 816.

Referring to FIG. 8B, the shaft 802 comprises the platform 806 and therod portion 808. In one embodiment, the rod portion 808 comprisesmeasurement indicators 815 and threads 870 which are formed with breaksor gaps 817 therein. The threads 870 are discontinuous around acircumference of the rod portion 808 to allow for the measurementindicators 815. The breaks 817 can comprise a smooth surface of the rodportion 808 and can be vertically aligned for each thread 870. Themeasurement indicators 815 may be substantially similar to thosedescribed above with reference to FIG. 4A.

FIG. 8C depicts an alternative embodiment of the support 800, whereinthe shaft 802 comprises a first end 807 and a second end 809. The secondend 809 comprises threads 870, while the remainder of the rod portion808 that does not comprises threads 870 comprises measurement indicators815. The inner portion of the tower body 816 comprises correspondinggrooves, teeth, or threads 871 that run along a substantial portion ofthe inner surface of the tower body 816 and allow the rod portion 808 tobe threaded in and out of the tower body 816. The measurement indicators815 on the rod portion 808 are similar to those described above withreference to FIG. 4A. Advantageously, the measurement indicators 815 areeasily visible due to the fact that the threads 870 do not extend alongthe entirety of the rod portion 808 but are instead limited to thesecond end 809 of the rod portion 808.

Operation of the support 800 will now be described with reference toFIGS. 8A-8C. As an example, the support 800 can be used in anapplication that requires suspending a 3 inch electrical box (not shown)in an 11½ inch concrete slab using a 7 inch tower.

The tower 804 is positioned within a frame and the shaft 802 is threadedinto the second end 834 of the tower body 816. To thread the shaft 802into the second end 834 of the tower body 816, the shaft 802 must berotated in a pre-determined direction such that the threads 870 on therod portion 808 engage with the corresponding threads 871 on the innersurface of the tower body 816. By rotating the shaft 802, the shaft 802may be raised or lowered relative to the tower 804. The rod portion 808is rotated until the measurement indicator 815 corresponding to 1½inches is aligned with the second end 834 of the tower body 816. Bysetting the rod portion 808 at the 1½ inch measurement indicator 815(FIGS. 8B, 8C), or at the color strip (FIG. 8A), the platform 806 ispositioned 1½ inches above the top of the tower body 816, which is 7inches tall, for a total height from the grade or substrate of 8½inches.

The interaction between the threads 870 of the rod portion 808 and thecorresponding threads 871 of the tower body 816 is such that, absentrotation of the shaft 802, the shaft 802 is securely positioned withinthe tower body 816, thereby preventing inadvertent linear motion of theshaft 802 within the tower body 816. In some embodiments, the threads871 are sized and shaped to provide resistance when engaged with thecorresponding threads 871 of the tower body 816. In some embodiments, aset screw is used to secure the shaft 802 and prevent rotational motion.

After the shaft 802 has been rotated to the desired position, theelectrical box is attached to the platform 806 and concrete is pouredinto the frame as described elsewhere herein.

The order in which the components of the support 800 are used can varywithout departing from the scope of the present disclosure. For example,a user may attach the object to the platform 806 using the pilot hole,set the shaft 802 to the desired height, then attach the tower 804 tothe grade or prepared substrate.

Referring to FIG. 9A, a support 900 comprises a shaft 902 and a tower904. The shaft 902 comprises a platform 906 and a rod portion 908. Therod portion 908 comprises notches 972 that extend radially from an outersurface of the rod portion 908. According to one embodiment, the notches972 surround the entire circumference of the rod portion 908. The tower904 comprises a tower body 916 and a base 918, which is attached to afirst end 932 of the tower body 916. The tower body 916 and base 918 canbe substantially similar to those described above with reference to FIG.3A. The tower body further comprises tabs 974 that are integrally formedto an inner surface of the tower body 916 and are preferably locatednear a second end 934 of the tower body 916. The shaft 902 is configuredto be inserted into the second end 934 of the tower body 916 andreleasably retained within the tower body 916 by an interaction betweenthe notches 972 on the rod portion 908 and tabs 974 on the inner surfaceof the tower body 916. In one embodiment, the rod portion comprisesmeasurement indicators 815 that are substantially similar to thosedescribed above with reference to FIG. 4A. In some embodiments, the rodportion 808 may comprises a color coding scheme substantially similar tothe scheme described above with reference to FIG. 8A.

FIG. 9B depicts a top view of the tower body 916 of FIG. 9A. The towerbody 916 comprising the tabs 974, a clamp 977, and one or more slits976. The clamp 977 comprises a tightening mechanism 979 configured totighten and release the clamp 977. The clamp 977 preferablysubstantially surrounds the circumference of the tower body 916, but ata minimum is configured to apply pressure to opposing points along thecircumference of the tower body 916. The clamp 977 may be permanentlypositioned near the second end 934 of the tower body 916, or the clamp977, when loosened, may be free to slide along the tower body 916. Theclamp 977 may be any suitable clamp, such as a quick-release clamp, ahose clamp, etc. The slits 976 are located along the tower body 916 andmay extend the length of the tower body 916. In some embodiments, theslits 976 may begin at the second end 934 of tower body 916 and extendonly partially down the length of the tower body 916. The slits 976 areconfigured to allow the tower body 916 to expand or flex when the clamp977 is not secured.

Operation of the support 900 will now be described. As an example, thesupport 900 can be used in an application that requires suspending a 3inch electrical box (not shown) in an 11½ inch concrete slab using a 7inch tower.

The tower 904 is positioned within a frame and the rod portion 908 isinserted into the second end 934 of the tower body 916. As the rodportion 908 is inserted into the tower body 916, the notches 972 push onthe tabs 974, causing the tower body 916 to expand or flex outwardly,allowing the notches 972 to pass the tabs 974. After each notch 972passes the tabs 974, the tower body 916 resumes its shape such that theshaft 902 is loosely suspended by the tabs 974. The diameter orcross-sectional area of the rod portion 908 is larger than the distanceseparating the tabs 974, whereas the diameter or cross-sectional area ofthe rod portion 908 is smaller than the diameter of the tower body 916.Thus, the rod portion 908 will be easily received into the tower body916 after passing the tabs 974. The rod portion 908 is inserted untilthe measurement indicator 915 corresponding to 1½ inches is aligned withthe second end 934 of the tower body 916. By setting the rod portion 908at the 1½ inch measurement indicator 915, the platform 906 is positioned1½ inches above the top of the tower body 904, which is 7 inches tall,for a total height from the grade or substrate of 8½ inches.

When the shaft 902 is at the desired position, the clamp 977 may betightened around the second end 934 of the tower body 916 using thetightening mechanism 979. This forces the tabs 974 securely between thenotches 972 of the rod portion 908, thereby securing the shaft 902 tothe tower 904.

In some embodiments, the rod portion 908 may comprise one or morenotches 972. In some embodiments, the rod portion 908 may comprise 2, 3,4, 5, 10, 20, or more notches 972, as desired to establish or set adesired height increment by which the shaft 902 can be adjusted. If asmaller increment is desired, more notches 972, spaced closer together,can be used. In some embodiments, the tower body 916 may comprise 1, 2,3, 4 or more tabs 974. In this case, the process described above wouldoccur at the same time for the number of tabs 974 interacting with acorresponding number of notches 972.

After the shaft 902 has been secured in the desired position, theelectrical box is attached to the platform 906 and concrete is pouredinto the frame as described elsewhere herein.

The order in which the components of the support 900 are used can varywithout departing from the scope of the present disclosure. For example,a user may attach the object to the platform 906 using the pilot hole,set the shaft 902 to the desired height, then attach the tower 904 tothe grade or prepared substrate.

FIG. 9C depicts a bottom view of an embodiment of the rod portion 908 ofFIG. 9A used in the support 900. Notches 972 extend radially fromopposite sides of the rod portion 908. According to this embodiment, thenotches 972 do not substantially surround the circumference of the rodportion 908. In other respects, the rod portion 908 is similar to thatof FIG. 9A.

Operation of the rod portion 908 according to FIG. 9C will now bedescribed. Once the tower 904 is positioned and secured to a substrate,the rod portion 908 is inserted into the second end 934 of the towerbody 916. To insert the rod portion 908, the rod portion 908 must beinserted such that the notches 972 are not aligned with the tabs 974.That is, the shaft 902 is inserted so that the portion of the rodportion 908 which does not include the notches 972 is axially orvertically aligned with the tabs 974. The shaft 902 may be freely raisedand lowered in the tower body 916 when the notches 972 are not alignedwith the tabs 974. The diameter or cross-sectional area of the rodportion 908 is smaller than the diameter of the tower body 916, so therod portion 908 will be easily received into the tower body 916. The rodportion 908 is inserted until the desired measurement indicator 315 isaligned with the second end 334 of the tower body 316. The rod portion908 and tower body 916 may then be rotated relative to each other tointerlock the tabs 974 and the notches 972. The clamp 977 may then betightened to prevent rotational and vertical motion of the shaft 902 andthereby securing the shaft 902 in the tower body 916 through a frictionfit.

In some embodiments, the rod portion 908 according to FIG. 9C maycomprise 1 or more sets of notches 972. In some embodiments, the rodportion 908 may comprise 2, 3, 4, 5, 10, 20, or more sets of notches972, as desired to establish or set a desired height increment by whichthe shaft 902 can be adjusted. If a smaller increment is desired, morenotches 972, spaced closer together, can be used. In some embodiments,the tower body 916 may comprise 1, 2, 3, 4 or more tabs 974. In thiscase, the process described above would occur at the same time for thenumber of tabs 974 interacting with a corresponding number of notches972.

After the shaft 902 has been locked into the desired position, anelectrical box (not shown), for example, can be connected to theplatform 906 using the pilot hole (not shown). The electrical box mayhave a mounting hole or a screw hole (not shown) formed therein. Themounting hole in the electrical box is positioned over the pilot hole310 in the shaft 302, and a screw, nail, or other attachment mechanismis inserted into the mounting hole and the pilot hole to attach theelectrical box to the platform 906.

Referring to FIG. 10, a support 1000 comprises a shaft 1002 and a tower1004. The shaft 1002 comprises a platform 1006 and a rod portion 1008.The rod portion 1008 is smooth and comprises measurement indicators 1015that are substantially similar to those described above with referenceto FIG. 4A. The tower 1004 comprises a tower body 1016, a base 1018, anda clamp 1077. The base 1018 is attached to a first end 1032 of the towerbody 1016. The tower body 1016 and base 1018 can be substantiallysimilar to those described above with reference to FIG. 3A. The clamp1077 is preferably located near a second end 1034 of the tower body 1016and is configured to substantially surround the rod portion 1008. Theclamp 1077 may be substantially similar to the clamp described abovewith reference to FIG. 9B. The clamp 1077 may be integrally formed intothe tower body 1016 or the clamp 1077 may be attached atop the secondend 1034 of the tower body 1016. A skilled artisan will recognize thatif the clamp 1077 is attached atop the second end 1034 of the tower body1016, the height of the support 1000 would be determined by aligning thedesired measurement indicator 1015 with the top of the clamp 1077.

Operation of the support 1000 will now be described. As an example, thesupport 1000 can be used in an application that requires suspending a 3inch electrical box (not shown) in an 11½ inch concrete slab using a 7inch tower.

The tower 1004 is positioned within a frame and the shaft 1002 isinserted into the second end 1034 in the tower body 1016. To insert theshaft 1002, the clamp 1077 must be loosened to allow the shaft 1002 tofreely move up and down within the tower body 1016. The diameter orcross-sectional area of the rod portion 1008 is smaller than thediameter of the tower body 1016, so the rod portion 1008 will be easilyreceived into the tower body 1016. The rod portion 1008 is raised orlowered until the measurement indicator 1015 corresponding to 1½ inchesis aligned with the second end 1034 of the tower body 1016. By settingthe rod portion 1008 at the 1½ inch measurement indicator 1015, theplatform 1006 is positioned 1½ inches above the top of the tower body1004, which is 7 inches tall, for a total height from the grade orsubstrate of 8½ inches.

When the shaft 1002 is at the desired position, the clamp 1077 istightened around the rod portion 1008, preventing motion of the shaft1002 relative to the tower 1004.

After the shaft 1002 has been inserted to the desired position, theelectrical box is attached to the platform 1006 and concrete is pouredinto the frame as described elsewhere herein.

The order in which the components of the support 1000 are used can varywithout departing from the scope of the present disclosure. For example,a user may set the shaft 1002 to the desired height, attach the objectto the platform 1006 using the pilot hole, then attach the tower 1004 tothe grade or prepared substrate.

Referring to FIG. 11A, a support 1100 comprises a shaft 1102 and a tower1104. The shaft 1102 comprises a platform 1106 and a rod portion 1108.The rod portion comprises teeth 1172 that run along the length of therod portion 1108. The rod portion 1108 further comprises measurementindicators 1115 that are similar to those described above with referenceto FIG. 4A. The tower 1104 comprises a tower body 1116, a base 1118, anda controller 1178. The base 1118 is attached to a first end 1132 of thetower body 1116. The controller 1178 is preferably located near a secondend 1134 of the tower body. The tower body 1116 and base 1118 can besubstantially similar to those described above with reference to FIG.3A. The shaft 1102 and the tower 1104 may be designed as a single unit(i.e., the shaft 1102 cannot be completely removed from the tower body1116).

Referring to FIG. 11B, the controller 1178 comprises a handle 1180 fixedto a circular gear 1182. The circular gear 1182 is configured to engagewith the teeth 1172 that run along the length of the rod portion 1108. Alocking pin (not shown) may be used to prevent the controller 1178 fromrotating by inserting the locking pin between the circular gear 1182 andthe teeth 1172 of the rod portion 1108.

Operation of the support 1100 will now be described. The support 1100can be used in an application that requires suspending a 3 inch thickelectrical box (not shown) in an 11½ inch concrete slab using a 7 inchtower 1104.

The tower 1104 is positioned within a frame and the shaft 1102 is raisedor lowered to a desired height. To raise or lower the shaft 1102, theteeth 1172 of the rod portion 1108 must be engaged with the circulargear 1182 of the controller 1178. As the handle 1180 is rotated, therotational motion of the controller 1178 is converted into linear motionof the shaft 1102. The diameter or cross-sectional area of the rodportion 1108 is smaller than the diameter of the tower body 1116, so therod portion 1108 will easily move within the tower body 1116. The rodportion 1108 is raised or lowered via the controller 1178 until themeasurement indicator 1115 corresponding to 1½ inches is aligned withthe second end 1134 of the tower body 1016.

When the shaft 1102 is positioned at the desired position, thecontroller 1178 is locked with the locking pin, thereby preventingmotion of the shaft 1102 relative to the tower 1104. The electrical boxis then attached to the platform 1106 and concrete is poured into theframe as described elsewhere herein.

The order in which the components of the support 1100 are used can varywithout departing from the scope of the present disclosure. For example,a user may adjust the shaft 1102 to the desired height, attach theobject to the platform 1106 using the pilot hole, then attach the tower1104 to the grade or prepared substrate.

Referring to FIG. 12, a support 1200 comprises an upper section 1223, alower section 1221, and a tower body 1216. The upper section 1223comprises a platform 1206 and a platform plug 1296. The lower section1221 comprises a base 1218 and a base plug 1294. The tower body 1216comprises a hollow cylinder with a first end 1232 and a second end 1234.In one embodiment, the tower body 1216 is a pipe such as a PVC, ABS,copper, or any other desired type of pipe with a predetermined diameterand height. In some embodiments, the platform plug 1296 is a raisedmember having a cross sectional area that decreases as it extends awayfrom the platform 1206 and is configured to securely fit into the secondend 1234 of the tower body 1216. Likewise, the base plug 1294 maycomprise a diameter that decreases as it extends away from the base 1218and is configured to securely fit into the first end 1232 of the towerbody 1216. In some embodiments, the platform plug 1296 and the base plug1294 may be cylindrical, rectangular, triangular, trapezoidal, etc. Theplatform plug 1296 and the base plug 1294 may be integrally formed ormolded with the platform 1206 and the base 1218 respectively. In someembodiments, an inner diameter of the tower body 1216 is equal to thediameter of the base plug 1294 and the platform plug 1296 such that,when assembled, the tower body 1216 is friction fit to the base 1218 andthe platform 1206. The base 1218 can be substantially similar to thebase described above with reference to FIG. 3A.

Operation of the support 1200 will now be described. The support 1200can be used in an application that requires suspending a 3 inch thickelectrical box (not shown) in an 11½ inch concrete slab. In thisexample, the support 1200 will have a 1 inch high base 1218 and a 1 inchhigh platform 1206. Accordingly, the tower body 1216 needs to 6½ inchesto accommodate for the base 1218, the platform 1206, and the electricalbox. In some embodiments, a pre-cut piece of pipe is used as the towerbody 1216. In some embodiments a pipe is cut to the needed length onsite.

The lower section 1221 is secured within a frame, first end 1232 thetower body 1216 is forced onto the base plug 1294 such that the firstend 1232 contacts the base 1218. The diameter or cross-sectional areanearest the base 1218 of the base plug 1294 is slightly larger than thediameter of the first end 1232 of the tower body 1216, and the diameteror cross-sectional area farthest from the base 1218 of the base plug1294 is slightly smaller than the diameter of the first end 1232 of thetower body 1216. Thus, the fit between the base plug 1294 and the firstend 1232 of the tower body 1216 will become tighter as the tower body1216 is forced onto the base plug 1294. In this manner, the tower body1216 is friction fit onto the lower section 1221. The upper section 1223is then put in position by forcing the platform plug 1296 into thesecond end 1234 of the tower body 1216, such that the second end 1234contacts the platform 1206. The diameter or cross-sectional area of theplatform plug 1296 nearest the platform 1218 is slightly larger than thediameter of the second end 1234 of the tower body 1216, and the diameteror cross-sectional area farthest from the platform 1218 of the platformplug 1296 is slightly smaller than the diameter of the second end 1234of the tower body 1216. Thus, the fit between the platform plug 1296 andthe second end 1234 of the tower body 1216 will become tighter as theplatform plug 1296 is forced into the second end 1234 of the tower body1216. In some embodiments, the platform plug 1296 and the base plug 1294are cylindrical and configured to have a diameter equal to the innerdiameter of the tower body 1216. In this manner, the tower body 1216 isfriction fit onto the upper section 1223. By pre-cutting the tower bodyto 6½ inches and then assembling the support 1200 using a 1 inchplatform 1206 and a 1 inch base 1218, the total height from the grade orsubstrate is 8½ inches. The platform 1206 and the base 1218 can be ofvarying heights, 1 inch is exemplary only.

After the support 1200 has been assembled, the electrical box isattached to the platform 1206 and concrete is poured into the frame asdescribed elsewhere herein.

The order in which the components of the support 1200 are used can varywithout departing from the scope of the present disclosure. For example,a user may fit the upper section 1223 onto the tower body 1216, then fitthe lower section 1221 onto the tower body 1216, and then attach thebase 1218 to the grade or prepared substrate.

Referring now to FIG. 13, a support 1300 comprises a platform 1306, abase 1318, and a plurality of modular stacks 1398. The platform 1306comprises one or more tabs 1373 that extend from a bottom of theplatform 1306. The base 1318 comprises one or more recesses 1375 formedin the upper portion of the base 1318. Each modular stack 1398 comprisesone or more tabs 1373 and one or more recesses 1375 arranged on opposingsides of the modular stacks 1398. The tabs 1373 are configured tosecurely fit, snap, or twist into the recesses 1375. The platform 1306,the base 1318, and the modular stacks 1398 are manufactured topre-determined heights. For instance, each modular stack 1398 may have aheight of 1 inch. In some embodiments, the modular stacks 1398 havevarying heights (e.g., ½ inch, 1 inch, 2 inches, 5 inches, etc.).Modular stacks 1398 of varying heights can be used to create a support1300 having a desired height.

Operation of the support 1300 will now be described. As an example, thesupport 1300 can be used in an application that requires suspending a 3inch electrical box (not shown) in an 11½ inch concrete slab. FIG. 13depicts modular stacks 1398, each with a height of 1 inch, however, forexemplary purposes, the present example uses modular stacks 1398 withpre-determined heights of ½ inch, 1 inch, and 5 inches. The platform1306 and base 1318 will each have a predetermined height of 1 inch.

The base 1318 is positioned within a frame and modular stacks 1398 arestacked onto the base 1318. To securely stack the modular stacks 1398onto the base 1318, the tabs 1373 of a modular stack 1398 must beinserted into the recesses 1375 of the base 1318. The tabs 1373 anothermodular stack 1398 is then inserted into the recesses 1375 of thepreceding modular stack and in this manner the support 1300 isassembled. The area occupied by the tabs 1373 is slightly less than thatof the recesses 1375, so the tabs 1373 will be received into therecesses 1375, forming a friction fit. In the present example, a 5 inchmodular stack, a 1 inch modular stack, and a ½ inch modular stack arestacked onto the base 1318 in the manner described above. The platform1306 is then positioned on top, bringing the total height of the support1300 to 8½ inches. A skilled artisan will appreciate that the tabs 1373and the recesses 1375 may be configured in several different shapes.(e.g., rectangular, cylindrical, semi-circular, triangular, etc.).Further, a skilled artisan will recognize that it is arbitrary whichside of the modular stacks 1398 the recesses 1375 and tabs 1373 arepositioned on, so long as they are configured to attach to the platform1306 and the base 1318 in an appropriate manner.

In some embodiments, the support 1300 may comprise 1 or more sets ofmodular stacks 1398. In some embodiments, the support 1300 may comprise2, 3, 4, 5, 10, 20, or more sets of modular stacks 1398 of varyingheights, as desired to establish or set a desired height increment bywhich the support 1300 can be adjusted. In some embodiments, the support1300 may comprise 1 or more sets of tabs 1373 on each modular stack1398. In some embodiments, the support 1300 may comprise 2, 3, 4, 5, ormore tabs per modular stack 1398. The skilled artisan will recognizethat for each set of tabs 1373 there must be an equal number of recesses1375 to receive the tabs 1373.

After the support 1300 has been assembled, the electrical box isattached to the platform 1306 and concrete is poured into the frame asdescribed elsewhere herein.

The order in which the components of the support 1300 are used can varywithout departing from the scope of the present disclosure. For example,the support 1300 may be assembled to a desired height, and then the base1318 may be attached to the grade or prepared substrate.

Referring to FIG. 14, a support 1400 comprises a shaft 1402 and a tower1404. The shaft 1402 comprises a platform 1406 and a rod portion 1408.The rod portion 1408 comprises protrusions 1481 that extend radiallyfrom an outer surface of the rod portion 1408 and substantially surroundthe circumference of the rod portion 1408. In some embodiments, theprotrusions 1481 circumferentially surround the rod portion 1408. Thetower 1404 comprises a tower body 1416 and a base 1418, which isattached to a first end 1432 of the tower body 1416. The tower body 1416further comprises tabs 1474 that are fixed to an inner surface of thetower body 916 and are preferably located near a second end 1434 of thetower body 1416. According to one embodiment, the platform 1406 isconfigured to be removed from the rod portion 1408. For instance, therod portion 1408 may comprise a threaded top (not shown) that may bescrewed into a threaded recess (not shown) in the platform 1406.According to one embodiment, the tower body 1416 may be detached fromand reattached to the base 1418. This may be accomplished by anysuitable means (e.g., clips, threads, fasteners). The rod portion 1408with the platform 1406 removed may be inserted into the first end of thetower body 1432. In some embodiments, the base 1418 comprises a hole1419 such that the rod portion 1408 with the platform 1406 removed maybe inserted through the hole 1419 in the base 1418 and into the towerbody 1416. With the exception of hole 1419 and the capability to detachfrom one another, the tower body 1416 and base 1418 can be substantiallysimilar to those described above with reference to FIG. 3A. The shaft1402 is configured to be adjustably retained within the tower body 1416by an interaction between the protrusions 1481 on the rod portion 1408and tabs 1474 on the inner surface of the tower body 1416. Theprotrusions 1481 and tabs 1474 are configured to allow the rod portion1408 unidirectional travel through the tower body 1416. (e.g., from thefirst end 1432 of the tower body 1416 through the second end 1434). Inone embodiment, the rod portion 1408 comprises measurement indicators1415 substantially similar to those described above with reference toFIG. 4A. In some embodiments, the rod portion 1408 may comprise a colorcoding scheme similar to the embodiment described above with referenceto FIG. 8A.

Operation of the support 1400 will now be described. As an example, thesupport 1400 can be used in an application that requires suspending a 3inch electrical box (not shown) in an 11½ inch concrete slab using a 7inch tower. In this example, the rod portion 1408 begins positionedinside the tower body 1416 with the platform 1406 proximate the secondend 1434 of the tower body 1416.

The tower 1404 is positioned within a frame and the shaft 1402 iswithdrawn from the tower body 316 by pulling on the platform 1406. Asthe rod portion 1408 is withdrawn from the tower body 1416, theprotrusions 1481 push on the tabs 1474, causing the tower body 1416and/or the tabs 1474 to expand or flex outwardly, allowing theprotrusions 1481 to pass the tabs 1474. After each protrusion 1481passes the tabs 1474, the tower body 1416 and/or the tabs 1474 resumesits shape, such that the shaft 1402 is prevented from reentry into thetower body 1416 by the tabs 1474. The diameter or cross-sectional areaof the rod portion 1408 is larger than the distance separating the tabs1474, whereas the diameter or cross-sectional area of the rod portion1408 is smaller than the diameter of the tower body 1416, so the rodportion 1408 will be easily received into the tower body 1416, asdescribed in greater detail below.

If the shaft 1402 is withdrawn past the desired height, the shaft 1408may be completely withdrawn from the tower body 1416. The platform 1406may then be removed and the rod portion 1408 may be inserted through thehole 1419 (if the base is not yet attached to the substrate) or throughthe first end 1432 of the detached tower body 1416, if capable. Once therod portion 1408 is reinserted into the tower body 1416, the platform1406 is reattached to the rod portion 1408. The rod portion 1408 iswithdrawn until the measurement indicator 1415 corresponding to 1½inches is aligned with the second end 1434 of the tower body 1416. Bysetting the rod portion 1408 at the 1½ inch measurement indicator 1415,the platform 1406 is positioned 1½ inches above the top of the towerbody 1404, which is 7 inches tall, for a total height from the grade orsubstrate of 8½ inches.

In some embodiments, the rod portion 1408 may comprise 1 or more sets ofprotrusions 1481. In some embodiments, the rod portion 1408 may comprise2, 3, 4, 5, 10, 20, or more sets of protrusions 1481, as desired toestablish or set a desired height increment by which the shaft 1402 canbe adjusted. If a smaller increment is desired, more protrusions 1481,spaced closer together, can be used. In some embodiments, the tower body1416 may comprise 1, 2, 3, 4 or more tabs 1474. In this case, theprocess described above would occur at the same time for the number oftabs 1474 interacting with a corresponding number of protrusions 1481.

After the shaft 1402 has been withdrawn to the desired position, theelectrical box is attached to the platform 1406 and concrete is pouredinto the frame as described elsewhere herein.

The order in which the components of the support 1400 are used can varywithout departing from the scope of the present disclosure. For example,a user may set the shaft 1402 to the desired height, attach the objectto the platform 1406 using the pilot hole, then attach the tower 1404 tothe grade or prepared substrate.

The various embodiments of the supports, methods, and systems describedabove provide a means to better position embeds for embedding inconcrete. Of course, it is to be understood that not necessarily allobjects or advantages may be achieved in accordance with any particularembodiment. Thus, for example, those skilled in the art will recognizethat the invention may be embodied or carried out in a manner thatachieves or optimizes one advantage or group of advantages as taughtherein without necessarily achieving other objects or advantages as maybe taught or suggested herein.

The foregoing description and claims may refer to elements or featuresas being “connected,” “coupled,” or “attached” together. As used herein,unless expressly stated otherwise, “connected” “coupled” and “attached”can mean that one element/feature is directly or indirectly connected toanother element/feature, and not necessarily mechanically, or that twofeatures are not necessarily discreet components, such as beingintegrally formed from a single cast, mold, and the like. Although thevarious schematics shown in the Figures depict example arrangements ofelements and components, additional intervening elements, devices,features, or components may be present in an actual embodiment (assumingthat the functionality of the depicted circuits is not adverselyaffected).

Although this invention has been disclosed in the context of certainembodiments and examples, it will be understood by those skilled in theart that the present invention extends beyond the specifically disclosedembodiments to other alternative embodiments and/or uses of theinvention and obvious modifications and equivalents thereof. It is to beunderstood that the implementations are not limited to the preciseconfiguration and components illustrated above. Thus, it is intendedthat the scope of the present invention herein disclosed should not belimited by the particular disclosed embodiments described above.

What is claimed is:
 1. A support device comprising: a shaft, the shaftcomprising: a rod; a platform attached to a first end of the rod; afirst thread disposed along at least a portion of the rod; and a towerhaving an interior surface, the interior surface surrounding an openingin a first end of the tower, the opening configured to receive the rod,wherein the interior surface comprises a second thread formed on atleast a portion of the interior surface and adapted to engage the firstthread.
 2. The support device of claim 1, wherein the tower furthercomprises: a securing element configured to releasably secure the rodwithin the tower.
 3. The support device of claim 1, wherein the firstthread is formed radially around an outer surface of the rod.
 4. Thedevice according to claim 1, wherein the platform has a pilot holeformed therein.
 5. The support device of claim 1, wherein the firstthread is discontinuous around an external surface of the shaft.
 6. Thesupport device of claim 1, wherein the tower comprises a retentionelement disposed on an exterior of the tower.
 7. The support device ofclaim 1, wherein the first thread is configured to rotatably engage thesecond thread.
 8. The support device of claim 1, wherein the shaftfurther comprises a plurality of measurement indicators thereon, themeasurement indicators indicating the distance from a second end of thetower to a top surface of the platform.
 9. The support device of claim1, wherein the tower further comprises: a base connected to a second endof the tower, the base comprising a plurality of legs extending radiallyfrom a central axis of the tower, the legs being formed havingthroughholes therein.
 10. The support device of claim 9 furthercomprising an attachment plate, the attachment plate configured toattach to the base, the attachment plate comprising attachment holes.11. The support device of claim 10, wherein the attachment holes arelarger than the throughholes in the legs of the base.
 12. A method ofsupporting an object comprising: placing a support device within a form,the support device comprising: a shaft, the shaft comprising: a rod; aplatform attached to a first end of the rod; a first thread disposedalong at least a portion of the rod; a tower having an interior surface,the interior surface surrounding an opening in a first end of the tower,the opening configured to receive the rod, wherein the interior surfacecomprises a second thread formed on at least a portion of the interiorsurface and adapted to engage the first thread; inserting the shaft intothe opening in the first end of the tower; and rotating the shaft toengage the first thread with the second thread.
 13. The method of claim12 further comprising adjusting the support device to a desired heightusing a plurality of measurement indicators located on the shaft, themeasurement indicators indicating the distance from a second end of thetower to a top surface of the platform.
 14. The method of claim 12further comprising attaching an object to the platform.
 15. The methodof claim 14 further comprising pouring concrete into the form around thesupport device, thereby embedding the object in the concrete at thepredetermined height.
 16. The method of claim 15 further comprisingretaining the tower in the concrete using a retention element, theretention element disposed on an exterior of the tower.
 17. The methodof claim 12, wherein the tower further comprises a base connected to asecond end of the tower, the base comprising a plurality of legsextending radially from a central axis of the tower, the legs beingformed having throughholes therein.
 18. The method of claim 17 furthercomprising attaching the base to an attachment plate, the attachmentplate comprising attachment holes that are larger than the throughholes,the attachment plate configured to be attached to a substrate byinserting an attachment mechanism through the attachment holes and intothe substrate.
 19. A support device comprising: a shaft, the shaftcomprising: a rod having a first diameter; a platform attached to afirst end of the rod, the platform having a pilot hole formed therein;at least one locking groove disposed along at least a portion of therod, wherein the at least one locking groove has a second diameter,which is larger than the first diameter; and a tower comprising: a towerportion having a first end and a second end, the tower portion having aninterior surface forming an opening in the first end, the openingconfigured to receive the shaft, wherein the interior surface comprisesat least one locking member disposed on the interior surface, the atleast one locking member configured to engage the at least one lockinggroove, respectively; a base connected to the second end of the towerportion, the base comprising a plurality of legs extending radially froma center of the tower portion; and a plurality of feet disposed on theplurality of legs.
 20. The support device of claim 19, wherein the atleast one locking groove is configured to rotatably receive the at leastone locking member, respectively, to releasably lock the shaft inposition within the opening.